Spike

Spike: The Pickles' family dog. Though he appears in almost every episode of the series, he is not usually featured as a main part of episodes. Tommy claims him to be his best "animal" friend. The character is considered a main character in the series, appearing in almost three quarters of all of the episodes, though he usually does not come along when the Rugrats venture to new locations. It is mentioned that his breed is the fictional "Siberian Tiger Hound." As shown in The Rugrats Movie and Rugrats Go Wild, Spike is very protective of the babies, as he sees them as his own.